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...Nutrients substances the body needs to regulate functions repair tissues promote growth d foo f obtain energy k o sy in a h e t r s fo w it en l ing u ly p im at n as g or ot most come from food we eat common analogy is like high performance race car fuel quality keep running its best unfortunately there are serious problems with this overly simplified classes of macronutrients carbohydrates proteins fats water provide vitamins minerals micronutrients do not calorie equals amount needed raise liter by one degree celsius chemical process which breaks down release calories called metabolism content trick question how many per gram and...